<a href="#" class="link_index">找培训</a>
    <a href="#" class="link_answer">学习用</a>
    <a href="#" class="link_proinfo">天鲜配</a>
    <a href="#" class="link_aboutus">疑问解答</a>
    <a href="#" class="link_uc">个人中心</a>